Authentic Panasonic NCR18650B 3400mAh batteries. One of the batteries offering the biggest possible mAh capacity you can get in an 18650. They can't handle the current that some of the other batteries can but as long as you're not running lots of current these will last a long time. They're happiest at 1-2A each although they can handle spikes up to about 6A.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)

If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside

If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

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As Described

Correct product ordered and delivered. Batteries will take quite some time to charge at .5amp and will get rather warm at 1a charging. 1a charging may shorten the cycle life of these batteries slightly.